HPC FAQ: Difference between revisions
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The primary reasons why the HPC may run slow are discussed below:
=== If run on a single CPU thread, Classic is a more efficient scheme ===
If running on the same CPU hardware, a well-constructed Classic model on a good timestep is nearly always faster than HPC running on a single CPU thread (i.e. not using GPU hardware). Running a single HPC simulation across multiple CPU threads may produce a faster simulation than Classic. HPC is best run using GPU hardware. HPC run using good GPU hardware should be faster than Classic on CPU. The <u>[[Hardware_Benchmarking | Computer Hardware Benchmark]]<
=== Over utilisation of CPU threads/cores ===
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